Number Fire Group

The Number Fire Group is a chromium mine located in Stanislaus county, California at an elevation of 1,401 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Number Fire Group

Commodity

Primary: Chromium

Location

State: California
County: Stanislaus
District: Del Puerto Area

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Higuera, Larry
Home Office: P.O. Box 1147, Patterson, Ca. 95363 (209) 892-5592
Years: 1975 -

Owner Name: West Coast Chrome Co.
Years: 1940 -

Production

Year: 1940
Time Period: 1918-1940'S
Material type: CON
Description: Cp_Grade: ^51% Cr2o3

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1918
Year Last Production: 1945
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Physiographic Detail: Diablo Range

Mineral Deposit Model

Not available

Orebody

Form: POD, IRREGULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Serpentinization Of Dunite

Rocks

Name: Dunite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic

Analytical Data

Analytical Data: CR/FE 2.41
Analytical Data: 16.36% FE
Analytical Data: CONCENTRATES: 57.62% CR2O3
Analytical Data: GRAB SAMPLE: CRUDE ORE 53% CR2O3

Materials

Ore: Chromite

Comments

Comment (Workings): DEPOSIT MINED BY BOTH OPEN CUT, TUNNELS AND STOPES. BLOCK OF GRANDCONTAINING THE MAIN WORKINGS OF NO. 5 GROUP HAS SLID INTO THE CANYON.

Comment (Deposit): HIGH GRADE ORE FORMED A LEDGE; BELOW IT WAS A DISSEMINATED ORE ZONE

Comment (Location): LOCATED APPROX. 300 M EAST OF JUNCTION OF ADOBE AND DEL PUERTA CANYONS

Comment (Geology): CHROMITE DEPOSITS OCCUR IN AN ULTRAMAFIC BODY THAT TRENDS N 70 W, IS 8 MILES LONG AND 1.5 MILES WIDE. THE ULTRAMAFIC BODY IS INTRUSIVE INTO THE UPPER PART OF EXPOSED FRANCISCAN SECTION.

References

Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.

Reference (Production): CDMG MINERAL PROPERTY REPORT, UNPUBLISHED

Reference (Deposit): WALKER, G.W. AND GRIGGS, A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CDMG BULL 134, PART II, CHAPT. 2, P. 76.

California Gold

"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.